[steely]

I believe that is the O2 sensor plug, and they're prone to this type of break.
(If the pic is sideways, it may not be your fault)

http://forums.pelicanparts.com/porsche-911-technical-forum/497025-o2-sensor-connector.html

http://forums.pelicanparts.com/porsche-911-technical-forum/134981-o2-sensor-plug-how-replace.html